Overview
The BC857ALT1G is a general-purpose PNP bipolar junction transistor (BJT) manufactured by onsemi. This transistor is designed for high-voltage applications and is part of the BC857 series, known for its reliability and versatility. It is packaged in a SOT-23 surface mount package, making it suitable for a wide range of electronic circuits. The BC857ALT1G is RoHS compliant, Pb-free, and halogen-free, ensuring environmental sustainability and compliance with regulatory standards.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-Emitter Voltage (VCEO) | 45 | V |
| Collector-Base Voltage (VCBO) | 50 | V |
| Emitter-Base Voltage (VEBO) | 5 | V |
| Collector Current (IC) | 0.1 | A |
| Power Dissipation (Pd) | 300 | mW |
| Operating Temperature Range | -55 to 150 | °C |
| Base-Emitter On Voltage (VBE(on)) | 0.7 (Typ) @ 0.5 mA, 0.9 (Typ) @ 5 mA | V |
| Current Gain (hFE) | 125 @ 2 mA, 5 V | |
| Package Type | SOT-23 | |
| Lead Shape | Gull-wing |
Key Features
- Pb-free, halogen-free, and RoHS compliant, ensuring environmental sustainability and regulatory compliance.
- High collector-emitter voltage of 45 V and high emitter-base voltage of 5 V.
- Low power dissipation of 300 mW.
- Wide operating temperature range from -55°C to 150°C.
- High current gain with a typical value of 125 at 2 mA and 5 V.
- Surface mount SOT-23 package for easy integration into modern electronic designs.
Applications
The BC857ALT1G is suitable for a variety of applications, including general-purpose switching and amplification in electronic circuits. It is particularly useful in high-voltage and low-power applications such as audio amplifiers, signal processing circuits, and automotive electronics. Its robust specifications and small package size make it an ideal choice for space-constrained designs.
Q & A
- What is the collector-emitter voltage of the BC857ALT1G? The collector-emitter voltage (VCEO) is 45 V.
- What is the maximum power dissipation of the BC857ALT1G? The maximum power dissipation is 300 mW.
- What is the operating temperature range of the BC857ALT1G? The operating temperature range is from -55°C to 150°C.
- Is the BC857ALT1G RoHS compliant? Yes, the BC857ALT1G is RoHS compliant, Pb-free, and halogen-free.
- What is the package type of the BC857ALT1G? The package type is SOT-23.
- What is the typical current gain of the BC857ALT1G? The typical current gain (hFE) is 125 at 2 mA and 5 V.
- What are the typical base-emitter on voltages for the BC857ALT1G? The typical base-emitter on voltages are 0.7 V at 0.5 mA and 0.9 V at 5 mA.
- Is the BC857ALT1G suitable for automotive applications? While it is not specifically marked as automotive-grade, it can be used in various high-reliability applications due to its robust specifications.
- What is the lead shape of the BC857ALT1G? The lead shape is gull-wing.
- How is the BC857ALT1G packaged for shipment? The BC857ALT1G is packaged in tape and reel format for safe delivery and easy mounting.
